November 2024
September 2025
[2025] September
The Ninth Month
September Night Watch: The Summer Triangle is still overhead, but Capricorn is rising
in the Southeast, and the “wet” constellations Aquarius, Pisces, and Southern Fish foreshadow the coming of Fall. Mercury, below bright Venus and Jupiter lights up the predawn Eastern sky.
The crescent Moon floats between Venus and Jupiter on the 17th and 18th . A predawn conjunction occurs on the 19 th when the Moon meets Venus and
Regulus, Leo’s bright blue star. Saturn is in opposition and closest to Earth on the 21; Saturns rings can be seen as a straight line. The Autumnal Equinox occurs on
September 22 at 11:19 AM MST.
September Moon Signs
Moon Phases
Full Moon 7 TH Day
(Dry Grass Moon-O’Odham)
Last Quarter 14 th Day
New Moon 21rd Day
First Quarter 29 st Day​
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Best Time To:
Bake: September 15,16
Brew: September 24-26
Begin diet to lose weight: September 8,17
Plant aboveground crops: September 24-26
Plant belowground crops: September 15, 16
Best Fishing Days (moon between new and full): September1-7, 21-30
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September has 30 days.
"Happily we bask in this warm September sun, which illuminates all creatures."
– Henry David Thoreau
September Weather
“We know that in September, we will wander through the warm winds of summer’s
wreckage. We will welcome summer’s ghost.” — Henry Rollins​
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TUCSON WEATHER AVERAGES FOR SEPTEMBER
Record High 111 (9/10/2023)
Record Low 43 (9/26/1943)
Record Daily Precipitation 2.85” (9/10/1964)
September Flora and Fauna
September is a prime butterfly month from the desert to the forests. Common species include Snouts, purple hairstreaks, funereal duskwings, and painted ladies.
Blooming flowers include telegraph plants (Hertotheca subaxillaris), turpetinebush (Ericameria lancifolia), goldenee (Viguiera muliflora), desert asters (Machaeranthera
spp.), and common sunflowers (Helianthus annus). Seep willows (Baccharis salicifolia) and canyon ragweed (Ambrosia ambrosoides) offer up nasty pollen and burrs along
waterways and washes.
Bird and bat migration is at its peak. Your hummingbird feeder may be emptied overnight by silent but persistent by Mexican long-nosed and lesser long-nosed bats. Desert bighorn sheep are breeding; pronghorn antelope breed September/October.
Notable September Dates:
September 1: Labor Day
September 20, 1860: Birthday of Byron Cummings, an American football coach and
Anthropology professor. He served as the head football coach at the University of Utah
in 1897 where he was a professor from 1893 to 1915. He later served as a professor of
Archaeology at the University of Arizona, where he became president of the University
(d. 1954).
September 22 marks the start of fall! This year’s Autumnal Equinox occurs at 11:19 AM
MST. On this date, there are approximately equal hours of daylight and darkness.
September 22 starts Rosh Hashanah, a Jewish holiday that marks the beginning of the
new year.
September 22, 1934: Birthday of Robert Luther "Lute" Olson, retired Hall of Fame
basketball coach, who has been inducted into both the Basketball Hall of Fame (2002),
the National Collegiate Basketball Hall of Fame (2006) and re-inducted in the class of
2019. He was the head coach of the University of Arizona's men's team for 25 years D.
2020).
September 24, 1941; Birthday of Linda Louise McCartney, Lady McCartney, American
musician, photographer, and animal rights activist and entrepreneur. She was married to
Paul McCartney of the Beatles (d.1998).
September 26, 1925: Birthday of Marty Robbins, American country singer (Devil
Woman, I Walk Alone), and race car driver, born in Glendale, Arizona (d. 1982).
September 26, 1991: 2 year experiment in Biosphere 2 in Oracle, Arizona begins.
September 27, 1965: Birthday of Stephen Douglas Kerr, an American professional basketball coach and former player who is the head coach of the Golden State Warriors of the National Basketball Association (NBA).
September 29: Michaelmas is an ancient Celtic “Quarter Day” which marked the end of
the harvesting season and was steeped in folklore.
September 30, 1935: The Hoover Dam, astride the border between the U.S. states of
Arizona and Nevada, is dedicated by FDR.